Piston-type minisize filter pump

A technology of piston type and filter pump, which is applied in the direction of fixed filter element filter, filter separation, semi-permeable membrane separation, etc. It can solve the problems of inconvenient use, large volume, unsuitable for sterile filtration, etc., and achieves convenient transportation and placement, The effect of small size and light weight

Inactive Publication Date: 2014-10-29
刘双喜 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to completely replace the time-consuming, labor-intensive, inefficient and risky manual aseptic filtration for impurity removal, and to overcome the defects of existing filters with la

Method used

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  • Piston-type minisize filter pump
  • Piston-type minisize filter pump
  • Piston-type minisize filter pump

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Experimental program
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Embodiment Construction

[0014] 1. Filtration is completed during the one-way transfer of piston pump liquid to reduce the volume of the device and facilitate direct packaging.

[0015] In order to reduce the volume, the device designed by the present invention does not fully load the liquid to be filtered when it is working, but constructs an open-circuit one-way transfer process that is carried out in a cycle: the guide tube, the filter F, the one-way valves Vi and Vo , small liquid container such as figure 1 Connect, the Vi conduction flow direction points to the inside of the liquid containing cylinder, and the Vo conduction flow direction points to the outside of the liquid containing cylinder. Therefore, the use of two one-way valves enables the inflow (also known as sample injection, liquid suction) and discharge of liquid to be completed in two pipelines. When the piston P moves upwards, under the action of high pressure in the FC, the liquid is discharged out of the FC through Vo, F and the ...

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Abstract

The invention discloses a piston-type minisize automatic pumping filter specially designed for laboratory use, a filter with a filter membrane is additionally arranged in a liquid one-way transport pipeline comprising a flow guiding pipe, a one-way valve, a piston and a small volume liquid barrel for completing the filtration, the one-way valve is used for separation of a liquid suction pipe and a liquid discharging pipeline, liquid transport power is directly provided by piston reciprocating motion; the rotation of a motor shaft is transformed into the linear motion of the piston by screw rod-nut transmission; liquid suction pipe and liquid discharging processes can be independently controlled and regulated; the rotation direction of a motor can be converted by automatic switching of the electrifying direction of the motor by use of a string for correlation of the movement of a reversing switch and the piston, and automatic piston reciprocating motion can be formed to realize automatic circulation of the liquid suction pipe and liquid discharging processes. When in use, the filtration can be realized only by connecting the flow guiding pipe, arranging the filter, electrifying, and adjusting the liquid discharging speed, the piston-type minisize automatic pumping filter is small in size, light in weight, convenient in operation and high in work efficiency, has other uses, and ist more suitable for laboratory filtration compared with other filter equipment.

Description

technical field [0001] The invention relates to an automatic filtering device, which uses electric power to drive a piston to automatically go back and forth to pump and discharge liquid, and realizes filtration and can directly pack collected liquid during the process. Small in size, light in weight, easy to use and operate, more suitable for laboratory filtration than other existing devices. Background technique [0002] In laboratory work in the fields of medical treatment, scientific research, teaching, etc., it is often necessary to filter some liquids to remove bacteria and impurities, and sometimes it is necessary to perform aseptic operations in ultra-clean workbenches to make the collected liquids free of microbial contamination. The usual method of artificial sterile filtration is to use a syringe to extract the liquid to be filtered in the ultra-clean workbench, and install a disposable filter with a filter membrane (aseptically treated at the factory, which conta...

Claims

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Application Information

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IPC IPC(8): B01D29/01B01D61/00
Inventor 刘双喜施静
Owner 刘双喜
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